<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>HTML+CSS(内行式)</title>
    <style>
        p {
           color: red;
           font-size: 60px;
        }
        </style>
</head>

<body>
    <p>Hello World</p>
    <div style="color: green;font-size: 30px;">Hello World_div</div>
    <div>demo_div_color</div>
    
</body>
</html>

